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February 21st, 2026 :: 4:36 am CST   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated February 21st at 3:54 am 
Temperature:23°F Dew Point:18°F
Barometer:30.12 inHg Wind:N 9 Mph
Humidity:79.1% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Feb 21st
Sunday
Feb 22nd
Monday
Feb 23rd
Tuesday
Feb 24th
Wednesday
Feb 25th
Cloudy Cloudy Cloudy Cloudy Cloudy
37°F
30°F
20°F
31°F
19°F
43°F
24°F
46°F
30°F
 
 Decatur Detailed Weather Forecast  
 
Saturday, February 21st, 2026
Morning Temperature: 33°F
Cloudy. Windy at times.
Afternoon Temperature: 32°F
Sunny. Windy at times.
Evening Temperature: 27°F
Cloudy. Windy at times.
Sunday, February 22nd, 2026
Overnight Temperature: 23°F
Cloudy. Windy.
Morning Temperature: 26°F
Cloudy. Windy.
Afternoon Temperature: 25°F
Cloudy. Windy.
Evening Temperature: 21°F
Clear with cloudy periods. Windy.
Monday, February 23rd, 2026
Overnight Temperature: 19°F
Cloudy. Windy.
Morning Temperature: 26°F
Sunny with cloudy periods. Windy.
Afternoon Temperature: 26°F
Sunny.
Evening Temperature: 24°F
Clear.
Tuesday, February 24th, 2026
Overnight Temperature: 24°F
Cloudy. Windy at times.
Morning Temperature: 36°F
Cloudy. Windy.
Afternoon Temperature: 42°F
Cloudy. Windy.
Evening Temperature: 41°F
Cloudy. Windy.
Wednesday, February 25th, 2026
Overnight Temperature: 41°F
Cloudy. Windy at times.
Morning Temperature: 44°F
Sunny with cloudy periods. Windy.
Afternoon Temperature: 39°F
Sunny. Windy at times.
Evening Temperature: 31°F
Cloudy.
Thursday, February 26th, 2026
Overnight Temperature: 28°F
Cloudy.
Morning Temperature: 35°F
Cloudy with a chance of showers. Showers possibly mixed with wet flurries. Windy at times.
Afternoon Temperature: 34°F
Cloudy. Windy at times.
Evening Temperature: 29°F
Clear.
Friday, February 27th, 2026
Overnight Temperature: 27°F
Clear.
Morning Temperature: 40°F
Sunny. Windy at times.
Afternoon Temperature: 38°F
Sunny. Windy at times.
Evening Temperature: 38°F
Clear. Windy at times.
Saturday, February 28th, 2026
Overnight Temperature: 37°F
A mix of cloudy and clear skies. Windy at times.
Morning Temperature: 52°F
Cloudy. Windy.
Afternoon Temperature: 56°F
Cloudy. Windy at times.
Evening Temperature: 36°F
Clear. Windy.
Sunday, March 1st, 2026
Overnight Temperature: 26°F
Cloudy. Windy at times.
Morning Temperature: 30°F
Cloudy. Windy at times.
Afternoon Temperature: 30°F
A mix of cloud and sun.
Evening Temperature: 28°F
Cloudy.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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